It is advised to
replace the Clutch Plates after ............ (Oooooppppppsssss, the manual didn't say
to replace it after how many km travel :) ) Well after so long, more than 15
years, it's definitely due. :)

The followings are
for car owners using Toyota Corolla AE86 Levin / Trueno rear axle that came with factory default LSD with a final
differential ratio of 4.1 for T-285 rear axle or 4.3 for T-283 rear axle. Well,
the actual real criteria is the Ring gear is 6.7 inch in diameter.

Summary: -

T282 = 4.3
final differential ratio without LSD

T283 = 4.3 final differential
ratio with LSD

T284 = 4.1
final differential ratio without LSD

T285 = 4.1
final differential ratio with LSD

Original parts number / source / information obtained from a forum member
nicked Drift4fun
form Club 4AG Technical
Talk Forum who is an Engineer. Therefore
many thanks goes to Drift4fun. He may be
contacted by clicking on his nick in the forum. Later on the source thread was
deleted. Don't know why?

The parts number
was collected and sent to UMW Toyota Malaysia
for ordering. However since these parts came from a model (AE86), which was not
originally available in Malaysia, therefore it is not registered in the spare
parts ordering database.

After around 2
weeks of telephone calls & emails exchange with UMW
Toyota Malaysia, the parts no. are finally registered into the ordering
database. Still parts will have to wait 1.5 months to arrive from Japan, while
an extra 25% surcharge will get it here in 2 weeks time. Finally a 30%
deposit required for ordering.

For this, thanks
goes to the following people for helping the entire process: -

The AE86's Manual should be obtained
before proceeding to rebuilt it. Or download it from : - AE86
Manual - Rear Axle

See pages RA-25 to 31 (only 6 pages,
so it's going to be a easy job :) - noooo, dream-on)

Another issue is
the "Clutch Member
Brass Washers", but it is stated as "Clutch
Member Thrust
Washers" in the manual. Hmmmmmmmmmmm, but we don't want to confuse
the spare part shop personnel, so "Clutch Member
Brass Washers" it is.

Finally Drift4fun also mentioned that
the Adjusting Washer (items 5 to 10) needs to be changed. There are 2 pieces,
one of each end of the axle. But they come in varying thickness. The correct
thickness is required to achieve optimum LSD torque / action.

According to another friend (
Mr. CHUA Chen Ming Machine Shop Machinist - who makes mould) help read the
manual and explain the mechanicals, which said, that in order to achieve optimum
LSD torque, one should use the thinnest Adjusting Washer to test, then change to
a thicker one, until the LSD starts to re-act, and finally move back down one
thickness. Something like this.........

Or, one should buy the thickest
Adjusting Washer, then skim it down to the correct thickness. So, it's your call
now.

Since most people wants heavy / higher LSD
torque reaction, hence it is adviced to buy the thickest Adjusting Washer. When
new it would have higher LSD torque performance versus setup from stock
recommendation. Since the Clutch Plates will wear and tear the LSD torque
performance will reduce over time and new plates will be required again.

Disclaimer :
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it, they, we, whoever, whatever will be responsible for one, party, parties,
individual, company, corporate, anyone, you, me, she, it, they, we, whoever,
whatever for reading this content and / or use it and get into trouble / hell /
heaven, so work at your own risk, judgment, study before you do anything.